#4188CC#4188CC

#4188CC is a mid, vivid cyan. Relative luminance 0.231; OKLCH L 61.2% C 0.126 H 249.8°. Best body text is #000000 at 5.62:1 contrast (WCAG AA passes).

Color values

HEX	#4188CC
RGB	rgb(65, 136, 204)
HSL	hsl(209, 58%, 53%)
HSV	hsv(209, 68%, 80%)
CMYK	cmyk(68.1%, 33.3%, 0%, 20%)
CIE-LAB	lab(55.16, -0.31, -41.65)
CIE-LCH	lch(55.16, 41.65, 269.57°)
OKLab	oklab(61.24% -0.0435 -0.1181)
OKLCH	oklch(61.24% 0.126 249.8)
XYZ	xyz(21.8792, 23.0895, 60.4187)
Luminance	0.2309 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4188CC #CC8541

analogous

#41CCCB #4188CC #4142CC

triadic

#4188CC #CC4188 #88CC41

tetradic

#4188CC #CB41CC #CC8541 #42CC41

square

#4188CC #CB41CC #CC8541 #42CC41

split-complementary

#4188CC #CC4142 #CCCB41

monochromatic

#1F4A74 #2C69A4 #4188CC #71A6D9 #A1C4E6

Accessibility & contrast

On white

3.74

#4188CC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.62

#4188CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4188CC

5.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4188CC	#FFFFFF	#000000	##000000
##4188CC	1.00	3.74	5.62	5.62
#FFFFFF	3.74	1.00	21.00	21.00
#000000	5.62	21.00	1.00	1.00
##000000	5.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A8BCF

Deuteranopia (green-blind)

#567ECB

Tritanopia (blue-blind)

#0098A1

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #4188cc;
/* rgb */ color: rgb(65, 136, 204);
/* oklch */ color: oklch(61.2% 0.126 249.8);

Tailwind

colors: {
  custom: {
    50: '#85aadc',
    500: '#4188cc',
    950: '#000000',
  },
}

SCSS

$custom: #4188cc;
$custom-light: #85aadc;
$custom-dark: #000000;

JSON

{
  "hex": "#4188cc",
  "rgb": {
    "r": 65,
    "g": 136,
    "b": 204
  },
  "hsl": {
    "h": 209.353,
    "s": 57.676,
    "l": 52.745
  },
  "oklch": {
    "l": 0.61244,
    "c": 0.12584,
    "h": 249.8
  },
  "luminance": 0.23092
}

Semantic roles & 50–950 ramp

primary

#4188CC

secondary

#D3B496

accent

#9247E1

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #4188CC

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →